Thanks. I changed my code after you pointed out what was wrong.

One thing I did notice in your code (and after runnning) was that the word count seems to be just 1. I changed it back to what I originally had so that it properly refers to ~78,000.

my @word_count = ();
@word_count = split(/\s/, $file);      # Find out how many words are i
+n abstracts.
my $word_number = scalar(@word_count);

[download]

I now have another problem in that some terms are still not picked up. I think this is because they contain special characters and a combination of upper and lowercase letters. I may be wrong.
These terms include:

adenosine-5'-triphosphate levels    0
h(2)O(2)    0
MPP+    0
-dichlorophenyl)-1,1-dimethylurea    0
adenosine-5'-triphosphate synthesis    0
photosynthesis, the antioxidant enzyme activities of superoxide dismut
+ase (superoxide dismuase) (EC    0
bcl-X(L)    0
ca2+    0
adenosine-5'-triphosphate production    0
ca(2+)    0
mitochondrial phospholipid hydroperoxide glutathione photosynthesis, t
+he antioxidant enzyme activities of SOD (superoxide dismuase) (EC    
+0
bcl-x(L)    0
deltapsi(m)    0
pirin(Sm)    0
rho(0)    0

[download]

...where the 0 represents the number of times the word was matched. These should all be 1+, as I initially got this data from the text file (via web service).

Any ideas as to how to resove this. I thought maybe using some escape character, but, have no idea how to integrate that into my original regex.

MonkPaul

In reply to Re^2: Regex word boundries by MonkPaul
in thread Regex word boundries by MonkPaul

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